		Test results
1	REDUCTION GEAR CHECK	All OK	Problems encountered	Operation
	Check the cylindrical reduction gear set Specifically: - it should not be worn or damaged; - there should not be excessive clearance; - the ring gear fastenings should not be slack.	Move on to Step 2	Reduction gear damaged	Restore the clearance or, if necessary, replace the reduction gear
2	SATELLITE CARRIER PIN CHECK	All OK	Problems encountered	Operation
	Check the wear of the satellite carrier pin or the housing in the differential casing Op. 2110D20 DIFFERENTIAL INTERNAL CASING, REMOVED - DISMANTLING AND REASSEMBLY, CHECK PLANET AND SATELLITE GEARS	End of diagnosis	Differential casing wear	Replace the differential casing Op. 2110D20 DIFFERENTIAL INTERNAL CASING, REMOVED - DISMANTLING AND REASSEMBLY, CHECK PLANET AND SATELLITE GEARS

With the engine running, there is noise at take off when the various gears are engaged: the noise changes as the speed changes.